Headphone



FIG. 1 is a perspective view of a headphone according to an embodiment of the claimed design;

FIG. 2 is a front elevational view of the headphone of FIG. 1;

FIG. 3 is a rear elevational view of the headphone of FIG. 1;

FIG. 4 is a left elevational view of the headphone of FIG. 1;

FIG. 5 is a right elevational view of the headphone of FIG. 1;

FIG. 6 is a top elevational view of the headphone of FIG. 1; and,

FIG. 7 is a bottom elevational view of the headphone of FIG. 1.

The features shown in broken lines are environment only and not part of the claimed design. 

CLAIM The ornamental design for headphone, as shown and described. 